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Full Discussion: Calling sqlplus from Korn shell heredoc issue
Top Forums Shell Programming and Scripting Calling sqlplus from Korn shell heredoc issue Post 302884617 by Navin_Ramdhami on Tuesday 21st of January 2014 06:15:59 AM
Old 01-21-2014
Calling sqlplus from Korn shell heredoc issue
Hi,
I am facing an issue wherein some temporary files (here docs) are getting created in /tmp and are not getting deleted automatically.
When i check the list of open files with below command i can see one file is getting appended continuously.(In this case /tmp/sfe7h.34p)
The output is something like below:
Code:
bash-3.2$ /usr/sbin/lsof | grep '/tmp' | grep '(deleted)'
sh_test 13107     test    0u      REG    8,3      224   1782884 /tmp/sfe7h.34p (deleted)
sh_test 13107     test    1u      REG    8,3        0   1782887 /tmp/sffak.tri (deleted)

Due to this the /tmp mount point is getting full causing trouble to application.
Following is the pseudo script which runs continuously monitoring status of application and then performs some tasks.
Code:
#!/bin/ksh
get_app_status(){
result=`sqlplus -s user/password@servicename <<EOF
whenever sqlerror exit sql.sqlcode
set escape off
set head off
set verify off
set feedback off
select param_value from status where param_name='app_status'
EOF
`
echo $result
}

while [ `get_app_status` = 'Started' ]; do
#Some logic here
done

The issue won't occur if we remove the first line shell interpreter(#!/bin/ksh) or we call the get_app_status once or twice and not in loop.
Korn shell version is:
version sh (AT&T Research) 93s+ 2008-01-31
Any help in understanding the cause is deeply Appreciated.

Thanks,
Navin
 

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LEARN ABOUT MOJAVE

platform::shell

platform::shell(n)					       Tcl Bundled Packages						platform::shell(n)

__________________________________________________________________________________________________________________________________________________

NAME

       platform::shell - System identification support code and utilities

SYNOPSIS

       package require platform::shell ?1.1.4?

       platform::shell::generic shell
       platform::shell::identify shell
       platform::shell::platform shell
_________________________________________________________________

DESCRIPTION

       The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell.

       This  package  allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only
       requirement is that the other shell (identified by its path), is actually executable on the current machine.

       While for most platform this means that the architecture of the interrogated shell is identical to the architecture of  the  running  shell
       this  is  not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run
       32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers.

       For applications like a code repository it is important to identify the architecture of the shell which will  actually  run  the  installed
       packages, versus the architecture of the shell running the repository software.

COMMANDS

       platform::shell::identify shell
	      This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::generic shell
	      This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::platform shell
	      This command returns the contents of tcl_platform(platform) for the specified Tcl shell.

KEYWORDS

       operating system, cpu architecture, platform, architecture

platform::shell 						       1.1.4							platform::shell(n)
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